Whole circumferential endoscopic submucosal dissection of superficial adenocarcinoma in long-segment Barrett's esophagus: A case report

Figure 2 Images of narrow-band imaging magnification endoscopy. A: Narrow-band imaging magnification endoscopy (NBI-M) shows a visible mucosal pattern with villous structures in protruded or elevated portions, as well as in the surrounding flat portions in the long-segment Barrett’s esophagus (LSBE); B: The villous patterns were rated as irregular because they showed variety in size and existed in a high density; C: In most of surrounding areas of the LSBE, mucosal patterns showed an irregular villous pattern [similar to the image (C)], and vascular patterns were rated as irregular because they showed a variety of forms and calibers under NBI-M observation with high magnification; D: In several flat areas, NBI-M demonstrated an invisible mucosal pattern with an irregular vascular pattern forming a network-like structure with a variety in caliber.